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A manufactuter of washing machine plans to introduce entry level new model to boost up his sale. the company has hired two independent market research firms MRA and MRB, to estimate the proportion of households that currently use washing machines. MRA conducted the survey of 400 households and it found 20% of the house holds currently using washing machines. MRB conducted survey of 600 households and found that 18% of house holds currently using washing machines. A)develop 95% confidence intervals for the two surveys B)explain the reason for difference between two surveys

A manufactuter of washing machine plans to introduce entry level new model to boost up his sale. the company has hired two independent market research firms MRA and MRB, to estimate the proportion of households that currently use washing machines. MRA conducted the survey of 400 households and it found 20% of the house holds currently using washing machines. MRB conducted survey of 600 households and found that 18% of house holds currently using washing machines. A)develop 95% confidence intervals for the two surveys B)explain the reason for difference between two surveys

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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A manufactuter of washing machine plans to introduce entry level new model to boost up his sale. the company has hired two independent market research firms MRA and MRB, to estimate the proportion of households that currently use washing machines. MRA conducted the survey of 400 households and it found 20% of the house holds currently using washing machines. MRB conducted survey of 600 households and found that 18% of house holds currently using washing machines.

A)develop 95% confidence intervals for the two surveys

B)explain the reason for difference between two surveys

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